Scientific evidence questions effectiveness of blue light filtering glasses

Scientific evidence suggests that blue light filtering glasses may not provide significant benefits for eye strain caused by digital device use. The American Academy of Ophthalmology does not recommend these glasses, noting a lack of evidence that blue light from digital screens causes eye damage. A 2023 Cochrane systematic review of 17 studies involving 619 participants concluded that blue light filtering lenses likely make no difference in short-term eye strain compared to standard clear lenses, nor do they appear to protect the retina or improve visual acuity.

Digital eye strain is a real condition characterized by symptoms such as fatigue, heaviness, burning, dryness, redness, blurred vision, and headaches. Experts note that these symptoms are often caused by reduced blinking frequency while concentrating on screens, which leads to the evaporation of the tear film and ocular surface dryness. Other contributing factors include ergonomic issues and neck or shoulder tension resulting from prolonged static positions.